This is going to be FIERCE!
Perry will be performing her new single, Firework, this weekend, alongside Diana Vickers, who will also be in attendance, to perform My Wicked Heart!
The following week, Rihanna is expected to perform Only Girl (In The World) alongside judge Cheryl Tweedy with Promise This!
Aguilera doesn't have a set performance date yet, but we imagine it will probably end up sometime around the premiere of Burlesque!
And let's hope that she chooses to sing one of the songs from that, instead of anything from Bionic!
Given the line-up of performances the producers have already secured, anything off of gurlfriend's latest would just be depressing!
[Image via WENN.]